9514 1404 393

**Answer:**

7.7 seconds

**Step-by-step explanation:**

The solution is given by the quadratic formula.

For ax² +bx +c = 0, the roots are ...

x = (-b±√(b²-4ac))/(2a)

We want the positive root, so ...

x = (-113 -√(113² -4(-16)(74)))/(2(-16)) = (113 +√17505)/32 ≈ 7.6658

**The rocket will hit the ground about 7.7 seconds after it is launched**.

Write an algebraic expression that models the situation

Jenny had $177, but she is spending $25 per month.

The answer for this equation would be

177-25x

Well, to find that out, you can simply just divide 116 by 2, and thats your answer!

116÷2= 58

~~~~~~~~

58·2=118

~~~~~~~~

**58 **

~Hope this helped! <em>:)</em>

**Answer:**

$60.98

**Step-by-step explanation:**

She is only paying tax on 80% of her total, since 20% was tax free school supplies, so her pretax total is..

$58.75(0.8) = $47

She only pays sales tax on $47, so the tax she pays is

$47(0.0475) = $2.2325 = $2.23

So the total she pays is $58.75 + $2.23 = $60.98