Which statement correctly describes the graph of Y= 3X +5?

Solve the equation for b: a= (1/2)(b)(h)

Dagne measures and finds that she can do a vertical jump that is 27.5% of her height.if dagne is 48 inches tall, how high can she jump? enter your answer in the box. inches

Cesar bought 7 items at the candy store. he bought candy bars for $0.50 each and packs of gum for $0.95 each. he spent a total of $6.80. what system represents the solution for the number of candy bars (x) and the number of pack gum (y) purchased?