20 more than half a number is at least 45 find the smallest number that means this condition

A certain magical substance that is used to make solid magical spheres costs $400 per cubic foot. The power of a magical sphere depends on its surface area, and a magical sphere can be sold for $60 per square foot of surface area.

Cans of regular soda have volumes with a mean of 13.3813.38 oz and a standard deviation of 0.110.11 oz. is it unusual for a can to contain 13.4813.48 oz of soda?

The equation 4.05p+14.40=4.50 (p+3) represents the number p of pounds of peanuts you need to make trail mix. How many pounds of peanuts do you need to make trail mix?

4) 8x+4y=-8 -x + 4y = - 17

Convert 125% to a decimal. A) 0.125 B) 1.25 C) 12.5 D) 125

Mr. Johnson sells erasers for $3 each. He sold 96 erasers last week and he sold 204 erasers this week. About how much more money did he make this week?

If 6t-3=-177 what is the value of the variable

What is the sum? - 0.3 + (-1.8)

Alejandro has 5 7/8 pizzas left over from a party. Is 1/4 of a pizza is a serving how many servings does Alejandro still have left?

Simplify 5 (R + 2) - 6. A. 5R + 4 B. 5R - 4 C. 5R - 6