# Roxanne wants to save up enough money so that she can buy a video game. The game costs $59. Roxanne has$22 saved from mowing the grass. In order to make more money, she plans to pressure wash her neighbors’ driveways. She plans to charge $5 for each driveway she pressure washes, and any extra money she makes beyond$59 she will save to buy another video game. How many driveways does she need to pressure wash to reach her goal?

Answer: Roxanna will have to wash 8 driveways giving her a total of $62 to go towards her new video game. She’ll have$3 left over.

## Related Questions

According to a past survey, 23% of Americans have hypertension. After a stringent regimen of diet and exercise, 75 people were then tested and 18 were found to have hypertension. Based on this sample, does diet and exercise reduce hypertension? Use a significance level of 0.05.a) yesb) no

Answer:No, Diet and exercise does not reduce hypertension.

Step-by-step explanation:

Since we have given that

p = 0.23

n = 75

x = 18

So,

So, hypothesis would be

So, the test statistic value would be

At α = 0.05 level of significance, we get

critical value = 1.96

and 1.96>0.204.

so, we will accept the null hypothesis.

Hence, No, Diet and exercise does not reduce hypertension.

Write an equation of a line that passes through (-3,1), perpendicular to Y=-3x-3

4

Step-by-step explanation:

• To be perpendicular, the product of the slope is -1.
• (x,y) Substituting the coordinates.
• y= 1/3(x+3) + 1
• y= 1/3x +2

Step-by-step explanation:

the first one is the correct answer

Is 3x supposed to be an exponent?

Step-by-step explanation:

3x as an exponent and as 6 times 3x

Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2. Use the given sample sizes and numbers of successes to find the pooled estimate. Round your answer to the nearest thousandth. n1 = 677 n2 = 3377
x1 = 172 x2 = 654

The calculated  value Z = 3.775 > 1.96 at 0.05 level of significance

Null hypothesis is rejected

The Two Population proportion are not equal

Step-by-step explanation:

Given first sample size n₁ = 677

First sample proportion

Given second sample size n₂ = 3377

second sample proportion

Null Hypothesis : H₀ :  p₁ = p₂.

Alternative Hypothesis : H₁ :  p₁ ≠ p₂.

Test statistic

where

P =  0.2036

Q = 1 - P = 1 - 0.2036 = 0.7964

Z =  3.775

Critical value ∝=0.05

Z- value = 1.96

The calculated  value Z = 3.775 > 1.96 at 0.05 level of significance

Null hypothesis is rejected

The Two Population proportion are not equal

Which expression has a negative value?−3×3×−3×−3×−3

−3×−3×3

−3×3×−3×−3

−3×−3

Step-by-step explanation:

A - 3×3×-3×-3×-3 = 243

B - 3×-3×3 = 27

C - 3×3×-3×-3 = -81

D - 3×-3 = 9

The correct option is C

Step-by-step explanation:

How many meters are in 100 millimeters? 1
10
0.1
100​