Calculators are sold to students for $20 each. Three hundred students are willing to buy them at that price. For every $5 increase in price, there are 30 fewer students willing to buy the calculator.

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2