This maybe primary but i don't get it

There's a circle with the radius = 3, calculate it's perimeter

Kami and her mother offer tours of a nearby canyon. They charge a $50 base rate plus $10 per person for a 2.5 hour tour. Which equation represents A, the amount they make to tour p people thorough the canyon?

Solve: 0.5a+2.54=0.8a+4.94.

What pair of fractions have a common denominator with 3/10 and 2/5

Ms. Marshall's grandmother has a delicious recipe for sugar cookies. The recipe calls for 4 cups of flours, 1 1/2 cups of sugar, 3/4 teaspoons of vanilla, 3 eggs, and 2/3 cups of butter. Ms. Marshall wants to make one-third of the recipe.

Find profit or loss % A) cp = 150 and profit = 250

Which of the following is the surface area of a cube with a side length of 9cm

Natasha had d dollars. She bought two ice creams which cost x dollars each. How much money does she have left?

How many times does 452 go into 95

Write the equation in standard form for the hyperbola with vertices (-10,0) and (4,0), and a conjugate axis of length 12.

In ΔSTU, m∠S = (10x-5) ^{/circ} (10x-5) ∘ , m∠T = (2x+4) ^{/circ} (2x+4) ∘ , and m∠U = (x-14) ^{/circ} (x-14) ∘ . Find m∠S.