APR of 7.8%, compounded monthly at 240 periods, you would need to invest today
$23,076.92
10.50a + 3.75b = 2071.50
3.75x82 = 307.50
2071.50-307.50 = 1764
10.50a = 1764
a = 1764/10.50 = 168
168 adult tickets were sold
A) 5 minutes, 7 balloons
He makes 36 sculptures in 180 minutes. To find the number of minutes to make 1 sculpture, divide by 36: =5. He uses 252 balloons to make 36 sculptures. To find the number of balloons in 1 sculpture, divide by 36
Answer:

Step-by-step explanation:
when a line is tangent to a circle, it is perpendicular to the line from the center of the circle to the intersection of the line and the circle. so first we are going to find the slope of the line in the circle.
to find the slope use the formula 
so the slope is -4/3
the slope of the line perpendicular to this is the opposite reciprocal: 3/4 so now we have y= 3/4 x +b, to find b plug in the point (-3,4) to get 4=-9/4 +b, b=25/4 the equation is y=3/4 x +25/4