Please help with this question

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

What expression is equivalent to 1/2(2+3x-6)

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.