The context of the sentence talks about to review or amend consumer charges as the cost of generating electricity is rising. ‘Preserve consumer charges’ is opposite to the context of the sentence. ‘Revise’ or ‘Review’ is the correct word. So, ‘preserve; is incorrect here ‘Utilities’ – a service that is used by the public ‘Preserve’ – maintain in its original or existing state ‘Chiaroscuro’ – an effect of contrasted light and dark ‘Plunges’ – push or thrust quickly
(√780 + 111.98) ÷ 6.95 + 39.95% of 179.98 = ?
(10.98% of 499.99) - 4.998 = √?
15.232 + 19.98% of 649.99 = ? × 4.99
`11(2/13)` + `5(2/11)` - `3(4/9)` = ?
(13.98% of 349.99) - 7.998 = √?
(29.97%) of 9840 + ? + (45.17% of 1240) = (31.955% of 11750)
124% of 620.99 + 11.65% of 1279.23 = ?
14.742 ÷ 24.98 × 15.76 = ?% of 359.88
? + 163.99 – 108.01 = 25.01 × 6.98