If y = x3 - 1, find the value of y when x = 2.

y = 7

Step-by-step explanation:

If y = x³ - 1,

When x = 2

y = 2³ -1

Note: 2³ = 2×2×2

y = 8 - 1

y = 7

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b.) 160 miles on a 5 gallons car

step-by-step explanation:

240/10=24 miles/gallon

160/5=32 miles/gallon

30/1=30 miles/gallon

168/6= 28 miles/gallon

32 miles/gallon is the most amount, so this is the best.

a triangular prism is a 3 dimensional shape composed of triangles and rectangles. it is made from two triangular bases and three rectangular sides.