I will give brainliest please help need this asap worth 100 points

a. R = 8

b. The number of retweets in the thousands in days.

c. I don't understand c I'm sorry.

d. It means the retweets and time in days are in 23.

e. In the picture below

Step-by-step explanation:

r(t) = 9t - 4

r(4) = 9(4) - 4

divide both sides by 4

R(4) = 9 - 1

r = 8

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)  

the ratio of grapes to blueberries she should use is 12: 3

step-by-step explanation:

if mandie is making 15 cups of fruit salad, the ratio of grapes to blueberries she should use is 12: 3.