Math problem please help A student bake sale is selling baked goods. In total they sell 100 pieces of baking, Chocolate chip cookies sell for $0.50 and Muffins for $1.25. The total money earned from the bake sale came to 68.75. How many muffins did they sell?

The number of muffins sold by the students is:

Step-by-step explanation:

First, we name the variables:

Now we establish the equations with the information given in the exercise:

We can use in this case the reduction method, to this, we multiply the first equation by (-0.5) obtaining the equation 3:

    3. -0.5C - 0.5M = -50

We operate the equations 2 and 3 to eliminate the variable C:

And we solve for the variable M:

We could stop here because we know the number of muffins now, but with the value for M, we can solve the value of C with the first equation to check the answer is correct:

In the end, we replace the values in the second equation and verify if the answer is correct:

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

me! what did you put for this question?

step-by-step explanation: