The equation of an ellipse is given below.400(x+13)2+625(y+6)2=1What are the foci of this ellipse?Choose 1 answer:(A) (−13+15,−6) and (−13−15,−6)(B) (−13,−21) and (−13,9)(C) (−28,−6) and (2,−6)(D) (−13,−6+15) and (−13,−6−15) Get tutor help
The equation of an ellipse is given below.8(x+7)2+13(y−10)2=1What are the foci of this ellipse?Choose 1 answer:(A) (−7+5,10) and (−7−5,10)(B) (7,−10+105) and (7,−10−105)(C) (7+105,−10) and (7−105,−10)(D) (−7,10+5) and (−7,10−5) Get tutor helpAlex earns a $35,000 salary in the first year of his career. Each year, he gets a 3% raise.Which expression gives the total amount Alex has earned in his first n years of his career?Choose 1 answer:(A) −0.0335,000(1−1.03n)(B) 0.0335,000(1−0.97n)(C) 35,0001.03(1−35,000n)(D) 35,0000.97(1−35,000n) Get tutor helpHarmony earns a $42,000 salary in the first year of her career. Each year, she gets a 4% raise.Which expression gives the total amount Harmony has earned in her first n years of her career?Choose 1 answer:(A) 42,000(0.961−0.04n)(B) 42,000(−0.041−1.04n)(C) 42,000(0.961−1.04n)(D) 42,000(−0.041−0.96n) Get tutor help
