In your class, you have scores of  89, 75, 82, and 86 on the first four of five tests. to get a grade of upper b, the average of the first five tests scores must be greater than or equal to 80 and less than 90. a. solve an inequality to find the least score you can get on the last test and still earn a upper b. b. what score do you need if the fifth test counts as two tests?

i got 142 as my answer

step-by-step explanation:

step-by-step explanation:

cats

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

13cm

step-by-step explanation:

(apex)