Question

3.(08.05)
Theresa eamed scores of 88 points, 84 points, 88 points, and 91 points on four tests. What is the lowest score she can get on the fifth test and still finish with an average score of 90 points?
(3 points)
99 points
096 points
097 points
98 points

Answer 1

Answer:

99 points

Step-by-step explanation:

Answer 2

Answer:

99 points

Step-by-step explanation:

Use x to represent what you're trying to solve using an equation:

$\frac{88 + 84 + 88 + 91 + x}{5}$ = 90

Now simplify:

$\frac{351 + x}{5}$ = 90

Simplifies into (when 351/5 is subtracted from both sides):

$\frac{x}{5} = 19.8$

Simplifies into (when each side is multiplied by 5)

x = 99