Answer: look at the picture
Step-by-step explanation: Hope this help :D
9x-7x= 2x
because both are x's now u cant add nor subtract anything to Y so just leave it alone but u can add 6+14
2x+8y=20
Answer:
30 cm
Step-by-step explanation:
2 * 15: 5 * 15
30:75
Exponential functions are in the form

, where <em>a</em> is the initial value, <em>b</em> is the growth rate (percent increase) + 1, and <em>x</em> is the number of time periods. Our initial value is 100, and we're given the growth rate + 1 (tripling is the same as increasing by 200%; 200%=2.0; 2.0+1=3). Therefore our function is

.
14.4 inches / 9 = 1.6 inches
Each column is 1.6 in wide