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k(t)=10 t-19 k(-7)=

k(t)=10t−19k(t)=10t-19\newlinek(−7)=k(-7)=

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Full solution

Q. k(t)=10t−19k(t)=10t-19\newlinek(−7)=k(-7)=
  1. Substitute t t with −7 -7 : To find the value of k(−7) k(-7) , we need to substitute t t with −7 -7 in the function k(t)=10t−19 k(t) = 10t - 19 .\newlineCalculation: k(−7)=10(−7)−19 k(-7) = 10(-7) - 19
  2. Multiply 1010 by −7-7: Now, we multiply 1010 by −7-7.\newlineCalculation: 1010(−7-7) = −70-70
  3. Subtract 1919 from −70-70: Next, we subtract 1919 from −70-70.\newlineCalculation: −70−19=−89-70 - 19 = -89

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