Nationwide Communications offers its customers a monthly plan for text messaging. Customers under this plan pay a flat rate of $5.00 each month for up to 200 text messages. For each additional text message over 200 (up to 2000 messages), the customer will pay $0.10. For each message over 2000 messages, the customer will pay $0.20. Complete the piecewise function that can be used to calculate the monthly billing amount, B, for a monthly level of t text messages. Note: Use the letter t as your variable.

B(t) =

if 0 ≤ t ≤ 200
if 200 < t ≤ 2000
if t > 2000

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.  

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 balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x

part a: 1.08

part b: 27.59