4 Adeline is A years old. a Write down an expression for:
i Adeline's age in 10 years' time
ji Adeline's age 6 years ago.
b Write down an equation for A.
Ć Solve the equation to find Adeline's age now.

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

Which number line represents the solution set for the inequality -1/2x> 24?

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4