The phone company Ringular has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone If a customer uses 370 minutes, the monthly cost will be 176. If the customer uses 690 minutes, the monthly cost will be 304 A) Find an equation in the form y=mx+b where x is the number of monthly minutes used and y is the total monthly of the Ringular plan. Answer: v = y=square

To find the equation in the form $y=mx+b$, we need to determine the slope (m) and the y-intercept (b).<br /><br />Given:<br />- When x = 370, y = 176<br />- When x = 690, y = 304<br /><br />Step 1: Calculate the slope (m)<br />The slope (m) is calculated using the formula:<br />\[ m = \frac{y_2 - y_1}{x_2 - x_1} \]<br />Substituting the given values:<br />\[ m = \frac{304 - 176}{690 - 370} = \frac{128}{320} = 0.4 \]<br /><br />Step 2: Calculate the y-intercept (b)<br />The equation of a line in slope-intercept form is:<br />\[ y = mx + b \]<br />We can use one of the given points to solve for b. Let's use the point (370, 176):<br />\[ 176 = 0.4(370) + b \]<br />\[ 176 = 148 + b \]<br />\[ b = 28 \]<br /><br />Therefore, the equation in the form $y=mx+b$ where x is the number of monthly minutes used and y is the total monthly cost of the Ringular plan is:<br />\[ y = 0.4x + 28 \]