The function ()=63⋅(1.03) c
(
x
)
=
63
⋅
(
1.03
)
x
models the cost in dollars,
c
, of 1 ounce of a certain chemical used in a laboratory.
x
represents the number of years since 1990.

How much does an ounce of the chemical cost in 2005? (Do NOT type the $ with your answer.)

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out