Consider the relationship 5r+4t=15. a. Write the relationship as a function r=f(t).
b. Evaluate f(−5).
c. Solve f(t)=11.

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.