Astandard shower head in marty's house dispenses 7 gallons of water per minute. marty changed this shower head to an energy-saving one. the equation shows the amount of water dispensed, y, as a function of the number of minutes, x, for the new shower head.

y = 3x

how much water does marty save each day with the change in shower heads if he uses the shower for 8 minutes each day?

a. 4 gallons
b . 12 gallons
c . 32 gallons
d . 53 gallons

Agrain trader buys the following amounts from three suppliers: 3,200 pounds, 5,100 pounds and 700 pounds. what is the total weight of his purchase?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!