Question

The local humane society is restocking on cat food to prepare for kitten season. Very young kittens need kitten formula which costs 3.99 per bottle. Older kittens need wet cat food which costs 1.5 per can.

Answer 1

Part A.) Let z be the variable denoted for the total cost of alIl kitten supplies. Then, let x be the number of bottles and let y be the number of cans. The equation would be: z = 3.99x + 1.50y The coefficients are 1 for z, 3.99 for x and 1.50 for y. There are no constants. The variables are z, x and y. Part B.) Substitute x=30 and y=120 to the equation in part A to determine z. z = 3.99(30) + 1.50(120) z = $299.7 Part C. Sales tax would be 7% of the total cost. This would be added as a constant. The expression would be: z = (3.99x + 1.50y)(1+0.07) Substituting x=30 and y=120, z = (3.99*30 + 1.50*120)(1+0.07) z = $320.679

Answer 2

Explanation:

A.) Let z be the variable denoted for the total cost of all kitten supplies. Then, let x be the number of bottles and let y be the number of cans. The equation would be:

z = 3.99x + 1.50y

The coefficients are 1 for z, 3.99 for x and 1.50 for y.

There are no constants.

The variables are z, x and y.

Part B.) Substitute x=30 and y=120 to the equation in part A to determine z.

z = 3.99(30) + 1.50(120)

z = $299.7

Part C.

Sales tax would be 7% of the total cost. This would be added as a constant. The expression would be:

z = (3.99x + 1.50y)(1+0.07)

Substituting x=30 and y=120,

z = (3.99*30 + 1.50*120)(1+0.07)

z = $320.679