Adiet is to include at least 140 milligrams of vitamin a and at least 145 milligrams of vitamin b. these requirements can be obtained from two types of food. type x contains 10 milligrams of vitamin a and 20 milligrams of vitamin b per pound. type y contains 30 milligrams of vitamin a and 15 milligrams of vitamin b per pound. if type x food costs $12 per pound and type y food costs $8 per pound how many pounds of each type of food should be purchased to satisfy the requirements at the minimum cost? round to the nearest hundredths.

An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?

Can someone me do math because i am having a breakdown rn because i don’t get it

What is the total surface area of this square pyramid?