Someone please help me with B

Multiply tokens (t) by the price: 1.25t

Subtract this from the total amount he has (25) the total needs to be less than or equal to $5 so he can buy lunch:

25 - 1.25(t) <= 5

Now solve for t:

Subtract 25 from both sides:

-1.25(t) <= -20

Divide both sides by -1.25

T <= 16

He can buy a maximum of 16 tokens.

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 answer is  

a.

4,624π mm2

step-by-step explanation: