Gavin is working two summer jobs, making $20 per hour lifeguarding and making $6 per hour walking dogs. In a given week, he can work no more than 10 total hours and
must earn at least $90. If x represents the number of hours lifeguarding and y
represents the number of hours walking dogs, write and solve a system of inequalities
graphically and determine one possible solution.
Inequality 1: y 24
plot
switch shade

1.   an exact solution requires a radical solution - no decimal approximation.2. (a)4x^3 = 756x^3 = 756/4 = 189x =   cube root of 189 =   5.74   to nearest hundredth answer(b)   189 = 3*3*3*7   so we can write the cube root of 189 as 3∛7 answerchecking (a) 4*(5.74^3 =   756.48   which is very close(b)   4* ((3∛3)^3   = 4*189   = 756   - spot on! 3. i would use solution b because the original question asked for an exact solution.