Let:
x = Chemistry textbooks sold
y = Physics textbooks sold
The textbook store sold a combined total of 260, so:
The number of chemistry books sold was three times the number of physics textbooks sold, so:
Let:
Replace (2) into (1):
Replace the value of y into (2):
3: -27
4: 81
5: -243
All you need to do is plug in the numbers into the exponent spot.
Answer:
The answer for the first equation is,
X = 6, -4
The answer for second equation is,
X = 9,2
Answer:
since her score was -12 from being perfect
if she had scored 12 more points her score would have been perfect .
that is difference between her score and the perfect score o each quiz was <u>12</u>
