Plz ! 25 points! 10. soda is on sale for $0.75 a can, and you have a coupon for $0.50 off your total purchase. write a function rule for the cost of n sodas. how much would 10 sodas cost? a. c(n) = 0.5n - 0.75; $4.25 b. c(n) = 0.75n - 0.5; $7.00 c. c(n) = 0.5n - 0.5; $4.50 d. c(n) = 0.75n; $7.50 12. the function b(n) = 6n represents the number of light bulbs b(n) that are needed for n chandeliers. how many lightbulbs are needed for 15 chandeliers? a. 90 lightbulbs b. 2 lightbulbs c. 96 lightbulbs d. 80 lightbulbs

10.: B. C(n) = 0.75n - 0.5; $7.00

12.: A. 90 light bulbs

Step-by-step explanation:

10. One soda costs 0.75. n sodas cost 0.75n. Then you subtract the coupon amount, so you pay 0.75n - 0.5.

The cost function is:

C(n) = 0.75n - 0.5

The cost of 10 sodas is:

For 10 sodas, n = 10.

C(10) = 0.75 * 10 - 0.5

C(10) = 7.5 - 0.5

C(10) = 7

B. C(n) = 0.75n - 0.5; $7.00

12. b(n) = 6n

The number of chandeliers is n.

If n = 15, then you have:

b(15) = 6 * 15

b(15) = 90

A. 90 light bulbs

 10.   B. C(n) = 0.75n - 0.5; $7.00

12 A. 90 lightbulbs

Step-by-step explanation:

10.  Cost of the purchase = number of cans * cost per can - coupon

We know the cost per can is .75 and the coupon is a one time coupon for .50

                            C(n)                = n * .75 - .5

If we let n=10 to buy 10 cans

C(10) = 10*.75 -.50

          = 7.50 - .5

          = 7.00  is the cost of 10 cans

12.  b(n) = 6n   where n is the number of chandeliers

                       b(n) is the number of light bulbs

If we have 15 chandeliers how many light bulbs do we need?

b(15) = 6*15 = 90

We will need 90 light bulbs

2x^2+5x+17

your welcome. : )

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58