I saw it before thankfully!
The systems of equation for each are
2r+b=8.40
3r+b=9.35
The amount charged for each breakfast is 6.50 and each refill costs .95.
We can prove this by adding 6.50 and .95*2 together to get a total of 8.40.
This works the same for the second system of equations as well.
A, C, D are the right answers since both sides are divisible by 5 and 8, respectively.
An equation is formed of two equal expressions. The number of seats in row 18 will be 119.
<h3>What is an equation?</h3>
An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
A.) Given the number of seats that the first row can have is 11, while the number of seats that the next row should have is six more than the previous one. Therefore, the number of seats will increase linearly.
Thus, the equation for the number of seats in any row can be given as y=11+6x, where y is the number of seats and x is the number of row.
B.) The number of seats in row 18 will be equal to,
y = 11 + 6x
y = 11 + 6(18)
y = 11 + 108
y = 119
Hence, the number of seats in row 18 will be 119.
Learn more about Equation:
brainly.com/question/2263981
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Answer:
A = 226.08
Step-by-step explanation:
Assuming that you are wrapping the sides of the cylinder and the circular top and bottom, then the formula for the surface area of the cylinder is:
A=2πrh+2πr^2 so substitute for each variable A=2(3.14)(3)(9) + 2(3.14)(3)^2
notice how I substituted 3 for the radius since it is 1/3 of 9 (the height)
Solving we get A = 169.56 + 56.52 = 226.08
