ian tosses a bone up in the air for his dog, spot. the height, h, in feet, that spot is above the ground at the time t seconds after she jumps for the bone can be represented by the function, h(t) = -16t + 20t. What is spot's average rate of ascent, in feet per second, from the time she jumps into the air to the time she catches the bone at t = 1/2 second?

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60 for the first and 130 for the second

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all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true