E. j. found a $45 sweater on sale for $27. what is the percent of discount?

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

Candice uses the function f(t)=t+100−−−−−−√ to model the number of students in her after-school program. the variable t represents days and f(t) represents the number of students. how many days does it take for there to be 15 students in her program? a. 225 days b. 125 days c. 325 days d. 115 days