The company Watts Up Power Co supplies electricity to Mr Davies. Charge=24.7 per unit of electricity used and 31p per day.
Mr Davies reading (start and end of 92 day period)= 13488 and 14399.
Company charges Mr Davies in total for the 92 day period.(correct to the nearest penny).
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How many solutions does the nonlinear system of equations graphed below have?

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?