Kayla went shopping at the Queens Mall and bought three shirts and four hats and spent a total of $66.70. The next day, she went back to the mall and bought six shirts and three hats and spent a total of $89.40. Let s represent the cost of a shirt and h represent cost of a hat. Write and solve a system of equations to find how much one shirt and one hat costs.

the least common denominatore of 7 and 2 is 9

step-by-step explanation:

7+2=9

you'll just earn points here

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of