If r=3 which is the value of (- 4r)/2 - 3r + 5 ?

What is the solution of log2  (3x  -  7)  =  3? 4 5

Taina went to the toy store and spent $21.05 on a board game, $2.75 on coloring books, and $13.22 on a model airplane. about how much money did taina spend in the toy store?

Alarger number is double the sum of a smaller number. the larger number is 2 less than 3 times the smaller number. if y represents the larger number and x represents the smaller number, which equations model the situation