SAT Math Practice Question #20845 - SATify | SATify
#20845
functions
absolute value
medium
120 sec
The function f is defined by f(x)=∣2x−5x∣. What positive value of a satisfies f(4)−f(a)=−18 ?
• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-). • Fractions must be in lowest terms. • Mixed numbers must be converted to improper fractions.
