Short-Response (2-points) Continued: 8) Use substitution to determine whether the system below has no solutions, infinitely many solutions, or
one solution.
15x + 5y = 20
y = 8 - 3x

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

Mr. vector door is buying two new cowboy hats all together the hats cost $75.12 the second heart cost twice as much as the first hat what is the price of the more expensive at round to the nearest hundredth