The sophomore class holds a car wash to raise money. a local merchant donates all of the supplies. a wash cost $5 per car and $6.50 per van or do i define a variable for the number of cars and a different variable for the number of vans or trucks

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

The data in the table represent the height of an object over time. which model best represents the data? height of an object time (seconds) height (feet) 05 1 50 2 70 3 48 quadratic, because the height of the object increases or decreases with a multiplicative rate of change quadratic, because the height increases and then decreases exponential, because the height of the object increases or decreases with a multiplicative rate of change exponential, because the height increases and then decreases

Find dy/dx using implicit differentiation ln(20+e^xy)=y