Answer: £83.70
Step-by-step explanation:
We can set up a ratio.
Let x be the amount he earns for 9 hours of work.

We can cross multiply:
x = 9*9.3
x = £83.70
Answer:
12 more
Step-by-step explanation:
y-5= 6+ (x+1)
5+6+1=12
I don’t know exactly but I tried the math and it’s either 4 or 5%
Answer:
у = x² + 7x - 30
Step-by-step explanation:
x₁ = 3 and x₂ = -10
Use the formula (x - x₁)(x - x₂) = 0
(x - 3)(x - (-10)) = 0
(x - 3)(x + 10) = 0
x² + 10x - 3x - 30 = 0
x² + 7x - 30 = 0