According to astronomers what is a "light year" math worksheet

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

Solve 2x2 + 8 = 0 by graphing the related function. there are two solutions: . there are no real number solutions. there are two solutions: 2 and -2

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)